Models with smart entry system
Push up the release button on the trunk lid after the doors are unlocked.
When You Cannot Open the Trunk
Even if the trunk is locked, you can open the trunk if you carry the smart entry remote.
Using the Trunk Release Button
Models with smart entry system
Honda Civic Service Manual. Trunk Lid Opener/Fuel Fill Door Opener Removal and Installation
849110
Removal
1.
Front Door Sill Trim - 4-Door
1.
Remove the cap (A) from the front door sill trim (B).
...